Operation
Instruction handbook BUM 60 / BUS 60
Document No.: 5.01032.05
57
8
8.3
Messages and warnings
8.3.1
Monitoring facilities of the feed current converter
For the monitoring facilities to function, the 24-V auxiliary voltage (at X5) must be available.
Ballast overload monitoring
Ballast overload monitoring prevents inadmissibly high loading of the internal brake resistor
(ED < 3 %).
Power supply failure / phase failure monitoring (optional)
Phase failure monitoring detects a single-phase or three-phase failure of the supply voltage and
prevents an internal ready for use.
The phase failure monitoring is not activated by default settings. Note derating while single
phase operation (see
NOTE
The message can be reset by a RESET on X1 after 2 s after a renewed connecting
of the supply voltage if the 24 V auxiliary voltage or 230 V additional power supply
remains.
For a normal switch-on a simultaneously switch-on of the power supplies on X1 and
X5 is recommended.
8.3.2
Monitoring on motor-end inverter
The following monitoring facilities exist:
f
Overcurrent in motor lines
f
Earth-fault current
f
DC Link overvoltage
f
Fault of power transistors (IPM)
f
Auxiliary power supply
Overcurrent message
The system monitors the motor current in two motor phases and generates an overcurrent mes-
sage if a phase current is 30 % higher than the allowed peak current.
This message is saved and results in a pulse disable.
The monitoring of 2 phases provides a limited short circuit protection.
The overcurrent message can be reset by a reset signal from the controller.
For display and resetting of the message, refer to the description of the controller.
NOTE
The overcurrent message is intended as protection; the controller ensures limitation
of the allowed peak current of the motor phase currents.
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